After activating the mission, head to the marker in Rogue Camp and examine the body near the white car north of the search area (pictures1-2).

picture1

picture2

Then head south towards the house and pass the palisade, then turn right and look at the shed door at the back of the garden (pictures3-4). Once you have done this, go around and approach the garage, then push the car so that you can enter the house (picture5).

picture3

picture4

picture5

Once inside, head for the living room and cross the passage between the furniture and the wall; all you have to do is to pick up Lisa’s letter in the room on the left to complete the quest (pictures6-7).